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Re: Speedometer Accuracy
- Subject: Re: Speedometer Accuracy
- From: Bob Hadden <kbhadden@xxxxxxxxxxx>
- Date: Thu, 2 Jun 2005 17:17:07 -0400
Pete, I have done just that on my new GS. Haven't found a way to
confirm the accuracy of the bike speedo yet, but it reads about 2 mph
below the bike speedo. I was very surprised at that.
If one has GPS on the bike, is the speed display super accurate at any
Bob Hadden '05R12GS, '62R27
On Jun 2, 2005, at 8:48 AM, Pete and Nat Lavengood wrote:
> BMW Designs the speedos to read high. The intent is for the speedo to
> always read high even with the largest possible tire mounted on the
> front rim. They will not recalibrate as it is supposed to be this way.
> Inexpensive and accurate solution is to get a bicycle speedo using a
> magnetic pick-up mounted on the brake disc. This unit is calibrated to
> to the tire on your bike. ie mark a spot on the tire and the pavement,
> roll ten times and measure the distance between spots and divide by
> 10. This is an accurate circumference of the loaded tire and is
> entered into the bicycle speedo to calibrate it to your bike.
> From: "Gregory Appling" <gappling@xxxxxxxxxxxxxx>
> To: <oilheads@xxxxxxxxx>
> Sent: Wednesday, June 01, 2005 10:32 AM
> Subject: Speedometer Accuracy